Coil mounting



?atentea1 Jan. 5, 1937 UNITED STATES PATENT OFFICE COIL MOUNTING Application June 4, 1935, Serial No. 24,878

8 Claims.

This invention relates to means by which coils are held for delivery of the web of which they are composed to mechanism which is to operate upon them. It is especially adapted for use in con- 6 nection with relatively light, narrow strip-material, such as the stay-web of paper applied to box-blanks by the machine of Letters Patent of the United States No. 1,988,451, Knowlton, January 22, 1935.

My invention has as an object the provision of a mounting, simple in character, to and from which coils may readily be applied and removed, and which will subject the coils, as they are being unwound, to an eifective braking action. In

the attainment of this object, the coils are received by two spaced contact members, preferably in the form of plates and carried by a support, one of which plates or members is guided for movement upon the support toward and from the other and is yieldably forced toward its companion, as by independently adjustable means situated at difierent distances from the center of the mounted coil. The plate-supports may be furnished by a pair of arms, to one of which one plate is secured. In the other arm, studs projecting from the second plate slide, and springs interposed between the arm and the movable plate apply pressure to a coil between the plates. A pin passing through openings in the arms,

plates and coil hold said coil rotatably upon the mounting. The plates exercise a braking force upon the coil which they hold and also maintain its convolutions against lateral displacement. Being relatively narrow and elongated in the direction of extension of the arms, the plates present little obstruction to the introduction of a coil between them, and this is further facilitated by causing one edge of a plate to diverge outwardly from the other to form a throat into which a coil may be inserted. Preferably, my improved mountings are arranged in pairs upon a rotatable spider, so while one coil is being drawn off another may be held ready to bring into delivering position without stopping the mechanism supplied.

One embodiment of the invention is illustrated in the accompanying drawing,

Fig. 1 being a broken side elevation of my improved mounting;

Fig. 2 a front elevation, looking from the right of Fig. 1, and

Figs. 3 and 4 sectional details on the lines III-411 and IVIV, respectively, of Fig. 1.

At l0 appears a fragment of the frame of a machine, to some mechanism of which is to be delivered web-material K, which may be paper stay-strip for reinforcing the edges of box-blanks. This web is coiled upon a core is. Since it is desired, in the patented machine previously referred to, to bring into delivering position with- 5 out interruption in the operation of the apparatus a fresh coil of material when one in use is nearly exhausted, a double coil-mounting is preferably provided. To the frame ill a bracket I2 is secured, having projecting horizontally from it a 10 spindle l4. Rotatable upon the spindle between fixed collars I6, I6 is a spider l8, from the hub of which extend opposite pairs of arms 20, 20. The spider may be fixed with either pair of arms in web-delivering position, by a latch 2| pivoted 15 upon the bracket [2 and arranged to engage either of two diametrically opposite notches in an enlargement 23 upon the spider-hub.

Considering one pair only of the arms, since the double mountings may be identically ar- 20 ranged, through the outer extremities of the pair are alined openings to receive a bearing pin 22 for a coil K, the core is of the coil fitting the pin to rotate freely thereon. The pin may have a head 24 limiting its movement through the arm-open- 5 ings and facilitating its handling. Near its opposite ends it is circularly grooved at 26, 26 to receive the rounded end of a spring-pressed latchpin 28 movable in one of the arms 20. The double groove permits the pin 22 to be inserted from 30 either side, thus rendering it convenient to manipulate the mounting when oppositely supported upon the frame. Bolted against bosses upon the inner face of one arm of the pair is a plate 36, extending from outside the pin 22 inwardly radi- 35 ally of the spider and of a coil K upon the mounting. The plate is of generally rectangular form and of sufficient length to reach inwardly beyond the periphery of a full coil. It has an opening through which the pin passes. 40

Movable upon the opposite spider-arm from the plate 30 is a plate 32, the latter having projecting from it studs 34 provided with cylindrical bearing portions 36 sliding in horizontal openings 38 in the adjacent arm. These studs are 45 spaced from one another, being located near opposite extremities of the plate. The inward movement of this plate 32 is limited by heads 40, near the outer extremities of the studs, to leave a space somewhat less than the thickness 50 of any coil which is to be applied to the mounting. These heads are shown as disks retained by cotter-pins. The movable plate 32 is pressed toward its companion, to the extent permitted by the heads or by an interposed coil K, by

springs 42 seated in bores in screws 44 threaded through the arm near the stud-openings 38 and contacting at their inner ends with the plate 32. 'Ihis'plate may be of the same length as the plate 30 but need not be as wide as the latter, which furnishes an abutment against which the coil is urged by the movable plate. At the side from which the coil is to be introduced, the longitudinal edge of the movable plate 32 may diverge outwardly from its companion at 46,

thus furnishing a throat into which the coil may readily be introduced. The edge-thrust of the movable plate may be taken at its inner extremity by a pin 41 passing through the alined openings in the spider-arms and plates, and retained against longitudinal displacement by cotter-pins. A similar resistance at the outer extremity of the plate is ofiered by the pin 22.

Assuming that delivery of the stay-Web is being made from the coil K which is held upmost upon the spiders l8 by the latch 2|, and that a fresh coil is to be applied to the lower mounting, the pin 22 of such lower mounting is withdrawn, the spring-latch 28 yielding. The empty core k may be removed from between the plates 30 and 32, and a full coil introduced. One edge of this coil is pressed into the throat furnished by the diverging edge 46 of the plate 32, causing the springs 42 to yield. The coil is then centered to bring its core-opening into registration with the openings for the pin 22, which is thereupon inserted until latched in place at 28. The full coil is thus made ready to take the place of an associated exhausting coil. It is to be noted that this arrangement allows delivery to be made from a coil without the employment of rotatable mounting elements, and that the simple, opposite pressure-plates 30 and 32 perform the double function of cheek-pieces to retain the convolutions of the coil laterally and of a brake to retard the rotation of the coil and thus prevent spinning. The amount of resistance necessary to obtain this result without producing unnecessary friction may be adjusted by the screws 44, which vary the force of the springs 42. This may be so proportioned as to produce, as nearly as possible, a uniform braking effect as the diameter of the coils diminishes in unwinding. The entire organization costs little to produce and maintain and is highly efiective.

Having described my invention, what I claim as new and desire to secure by Letters Patentof the United States is:

1. A coil-mounting comprising a support, spaced contact members between which a coil is received, one of the members being movable toward and from the other and being guided by the support, and plural means situated at diiferent distances from the center of the mounted coil for yieldably forcing the movable member toward the other member, each of said means being provided with means individual to it for varying the force applied to the movable member.

2. A coil-mounting comprising a support, spaced plates between which a coil is received, one of the plates being movable toward and from the other and having projections guided in the support, screws threaded through the support at different distances from the center of the mounted coil, and a spring interposed between each screw and the movable plate, each spring being individually adjustable by its screw with respect to the force exerted upon the coil.

3. A coil-mounting comprising a. support, spaced plates provided with alined openings and between which a coil is received, one of the plates being movable toward and from the other and having studs projecting from one face and sliding in openings in the support, each stud being provided with an enlargement for contact with the outer side of the support, means for yieldably forcing the movable plate toward the other plate, and a coil-retaining member carried by the support and extending through the plate-openings.

4. A coil-mounting comprising a rotatable hub. a pair of arms projecting from the hub and having an intermediate space, a plate secured to one arm, a plate provided with a plurality of projections movable in openings in the other arm, each projection having an enlargement for contact with the outer side of the arm, and a plurality 0! screws threaded through the arm carrying the movable plate and having yieldable means contacting with said plate.

5. A coil-mounting comprising a rotatable hub. a pair of arms projecting from the hub and having an intermediate space, a plate secured to one arm, a plate movable upon the other arm, both of said plates being relatively narrow and elongated in the direction of extension of'the arms and one plate having a longitudinal edge diverging outwardly from the other plate, and means interposed between the movable plate and arm for forcing said movable plate toward the other plate.

6. A coil-mounting comprising a rotatable hub, a pair of arms projecting from the hub and having an intermediate space, a plate secured to one arm, a plate movable upon the other arm, the plates and arms being provided with alined openings in their outer extremities, a coil-retaining pin extending through the openings, and means for yieldably forcing the movable plate toward the other plate.

7. A coil-mounting comprising a rotatable hub, a pair of arms projecting from the hub and having an intermediate space, a plate secured to one arm, a plate movableupon the other arm, the plates and arms being provided with alined openings in their outer extremities, a coil-retaining pin extending through the openings and. having a head and two grooves, the grooves being respectively located within the arms, and a, latch movable in one of the arms and entering one of the ooves.

8. A coil-mounting comprising a bracket, a spider movable thereon and having oppositely projecting pairs of arms, the arms of each pair being spaced from each other, means arranged to fix the spider in different rotary positions, a plate secured to one arm of each pair and serving as an abutment for a coil, a plate movable upon the opposite arm of each pair, springs co-operating with the movable plate for pressing a coil against the abutment-plate, and a pin passing through the outer extremity of each pair of arms and through the coil thereon to retain said coil in the mounting.

CUTLER D. KNOWLTON. 

